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65 lines
1.9 KiB
65 lines
1.9 KiB
import {Application} from './Application'
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import {Container, Injectable, TypedDependencyKey} from '../di'
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/**
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* Base type for a class that supports binding methods by string.
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*/
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export interface Bindable {
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getBoundMethod(methodName: string): (...args: any[]) => any
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}
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/**
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* Returns true if the given object is bindable.
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* @param what
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* @return boolean
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*/
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export function isBindable(what: unknown): what is Bindable {
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return (
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Boolean(what)
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&& typeof (what as any).getBoundMethod === 'function'
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&& (what as any).getBoundMethod.length === 1
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&& typeof (what as any).getBoundMethod('getBoundMethod') === 'function'
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)
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}
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/**
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* Base for classes that gives access to the global application and container.
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*/
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@Injectable()
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export class AppClass {
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/** The global application instance. */
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private get appClassApplication(): Application {
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return Application.getApplication()
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}
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/** Get the global Application. */
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protected app(): Application {
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return this.appClassApplication
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}
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/** Get the global Container. */
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protected container(): Container {
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return this.appClassApplication
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}
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/** Call the `make()` method on the global container. */
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protected make<T>(target: TypedDependencyKey<T>, ...parameters: any[]): T {
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return this.container().make<T>(target, ...parameters)
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}
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/**
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* Get the method with the given name from this class, bound to this class.
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* @param {string} methodName
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* @return function
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*/
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public getBoundMethod(methodName: string): (...args: any[]) => any {
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if ( typeof (this as any)[methodName] !== 'function' ) {
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throw new TypeError(`Attempt to get bound method for non-function type: ${methodName}`)
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}
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return (...args: any[]): any => {
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return (this as any)[methodName](...args)
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}
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}
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}
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